What do you mean by “is it too old?”, are you asking if your chimney is too old for a prefab liner?
The age of your chimney is not a concern, its condition is. If it is structurally unsound it can fail / collapse no matter what type of a liner you’re going to install. So make sure it is structurally sound before investing into the liner installation.
You’d most likely need a stainless steel flexible tube, cap, top plate, and a tee. Depending on the exposure of your chimney - fully exposed / side wall or only partially (top section) exposed with majority concealed inside the house, and your local code requirements, you may or may not need an insulating sleeve.